WO2014191273A2 - Procédés et dispositifs de traitement d'une trame de données - Google Patents

Procédés et dispositifs de traitement d'une trame de données Download PDF

Info

Publication number
WO2014191273A2
WO2014191273A2 PCT/EP2014/060423 EP2014060423W WO2014191273A2 WO 2014191273 A2 WO2014191273 A2 WO 2014191273A2 EP 2014060423 W EP2014060423 W EP 2014060423W WO 2014191273 A2 WO2014191273 A2 WO 2014191273A2
Authority
WO
WIPO (PCT)
Prior art keywords
data
symbol
sub
size
guard interval
Prior art date
Application number
PCT/EP2014/060423
Other languages
English (en)
Other versions
WO2014191273A3 (fr
Inventor
Stefan Fechtel
Original Assignee
Intel Mobile Communications GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intel Mobile Communications GmbH filed Critical Intel Mobile Communications GmbH
Priority to CN201480022617.1A priority Critical patent/CN105122755B/zh
Priority to EP14725991.5A priority patent/EP3005637B1/fr
Publication of WO2014191273A2 publication Critical patent/WO2014191273A2/fr
Publication of WO2014191273A3 publication Critical patent/WO2014191273A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers

Definitions

  • the disclosure relates to methods and devices for processing a data frame comprising at least one data symbol, in particular at least one OFDM data symbol .
  • guard interval (GI) length is fixed and defined such that it covers the longest multipafh delay encountered in a worst-case scenario, that is , large cell size, long range and reflection at distant obj ects .
  • GI lengths are defined, e.g., the three GI lengths associated with LTE formats that are: normal cyclic prefix (CP) according to 4.69ps for the maj ority of macro cells, extended CP according to 16.67ps for large cells and small single-frequency networks, and another extended CP according to 33.33us for large SFN.
  • CP normal cyclic prefix
  • extended CP according to 16.67ps for large cells and small single-frequency networks
  • 33.33us for large SFN.
  • a maj or issue with conventional CP-OFDM is the missing flexibility of the guard interval in terms of length and content.
  • the GI cannot be tailored to the prevalent channel dispersion. Therefore, the GI length is usually chosen conservatively to cover the worst-case channel dispersion expected. Under typical, more benevolent channel conditions , this entails a substantial loss of transmission capacity and throughput, a disadvantage which also translates into multi-user environments , i.e., the GI length cannot be tailored to individual users .
  • GI length Another issue with conventional CP-OFDM is the interdependence between the GI length and the frame format in which OFDM symbols are embedded.
  • a change in GI length necessarily entails a change in the frame structure, i.e., the number of OFDM symbols in a frame .
  • the frame format would have to change also .
  • GI flexibility is severely limited in single-user scenarios and impossible to achieve in multi-user environments.
  • Fig . 1 illustrates an example of a data frame carrying data symbols .
  • FIG. 2 illustrates examples of data frames carrying data symbols .
  • FIG. 3A, B illustrates an exemplary OFDM
  • Fig. A, B illustrates examples for OFDM symbol [0017]
  • a particular feature or aspect of an example may be ⁇ sclosed with respect to only one of several implementations, such feature or aspect may be combined with one or more other features or aspects of the other implementations as may be desired and advantageous for any given or particular application.
  • the terms “include”, “have”, “with” or other variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term “comprise” .
  • the terms “coupled” and “connected”, along with derivatives may be used.
  • the devices and methods as described herein can be utilized as part of and for radio transmission systems, namely for systems operating in the Orthogonal Frequency Division Multiplex (OFDM) mode .
  • the devices disclosed may be embodied in baseband segments of devices used for the
  • base stations particular base stations, relay stations, mobile phones, hand-held devices or other kinds of mobile radio receivers .
  • the described devices may be employed to perform methods as disclosed herei , although those methods ma be performed in any other way as well .
  • DVB-T/H ⁇ digital video broadcasting
  • DSL digital subscriber line
  • the methods and devices as described herein may be utilized with any sort of antenna configu ations employed within the multiple carrier radio transmission system as described herein .
  • the concepts presented herein are applicable to radio systems employing an arbitrary number of transmit and/or receive antennas, that is Single Input Single Output (SISO) systems, Single Input Multiple Output (SIMO) systems, Multiple Input Single Output (MISO) systems and Multiple Input Multiple Output (MIMO) systems .
  • SISO Single Input Single Output
  • SIMO Single Input Multiple Output
  • MISO Multiple Input Single Output
  • MIMO Multiple Input Multiple Output
  • the data frame 100 has a predetermined frame size M and includes a plurality of data symbols 102 configured to form a plurality of sub-carriers in the frequency domain .
  • Each data symbol 102 includes a user data portion (OFDM) 104 and a guard interval portion (GI) 106 which may include a guard word (GW) .
  • OFDM user data portion
  • GI guard interval portion
  • GW guard word
  • At least one of the following parameters is variable during the processing of he data frame 100 : a size L of the guard interval portion 106, a size -L of the user data portion 104 , a size N of the data symbol 102, a number of data symbols 102 the data frame 100 comprises, and a content of the guard interval portion 106.
  • the data symbol 102 is encoded according to an orthogonal frequency division multiplexing technique .
  • the guard interval portion 106 includes a guard word.
  • the guard word is a predetermined guard word.
  • the size of the data symbol 102 is variable with respect to a power of two of a basic data symbol size, for example of a byte or a word .
  • the size L of the guard interval portion 106 is based on at least one of the following parameters : a channel delay spread, a modulation and coding set , a MIMO layer and antenna configuration, and a link direction, e.g., upstream or downstream.
  • V-OFDM variable-guard OFDM symbol format
  • the data frame 100 can ha e any number of OFDM symbols 102, for example a number of eight OFDM symbols or any other power of two, a number of 3, 6, 7 or any other number .
  • the guard interval is included i the (i)DFT OFDM (de) modulation window whose length is equal to the OFDM symbol length N.
  • the OFDM symbol 102 so defined comprises a "useful" part of length N-L denoted here as the user data por ion 104 and a guard interval of length L denoted here as the guard interval portion 106 filled with a guard word (GW) .
  • Fig. 1 shows the guard interval portion 106 at the end of the OFDM symbol 102, but it may also be located at the start or at both ends of the OFDM symbol 102.
  • the VG-OFDM format features variable GI length L within a framework of fixed-length OFDM symbols 102 embedded in a fixed or predetermined f ame 100 structure .
  • VG-OFDM is used for supporting the unique word (UW) -OFDM format as both are designed to include the GI 106 in the OFDM symbol 102.
  • UW unique word
  • VG-OFDM supports the UW-OFDM features of a unique, i.e. fixed word filling the GI 106 for the purpose of realizing some Reed-Solomon (RS) coding gain and aiding synchronization and channel estimation .
  • RS Reed-Solomon
  • VG-OFDM additionally features a guard interval 106 of variable length and likewise variable content, that is , the guard word.
  • VG-OFDM is a versatile format characterized by the new flexibility of being adaptive to time-variant and/or user-specific channel and transmission characteristics .
  • Advantages of VG-OFDM are the following:
  • the variable guard interval 106 can be adapted to the channel and transmission conditions on the link that are for example channel delay spread and other link parameters. If the channel delay spread T is shorter than the GI 106 currently used ( T ⁇ L) , the GI length L is reduced and a shorter GW is selected . This avoids unnecessary loss of transmission power and data rate, thus increasing transmission efficiency and throughput.
  • the GI 106 can further be tuned to parameters such as the MCS ⁇ modulation/coding set ⁇ , the MIMO layers /antennas, or the link direction (uplink/downlink) .
  • the frame format i.e., the number of OFDM symbols per frame, is independent of the GI adaptation. The frame format can remain fixed, hence, it is simpler to define, standardize, and implement .
  • a suitably defined fixed frame format can accommodate OFDM symbols 102 of different lengths N which is a feature that further extends the range of GI lengths .
  • the novel signal format VG-OFDM is thus characterized by variable, possibly user-specific guard intervals which are (largely) decoupled from the OFDM symbol length and frame format .
  • a corresponding transmission system is used for transmitting the frames 100.
  • the data frame 300 has a predetermined frame size M and includes a plurality of data symbols 302 configured to form a plurality of sub-carriers in the frequency domain .
  • an exemplary number of eight data symbols 302 is depicted for the first 310, second 312, third 314 and fourth 316 exemplary data frames
  • an exemplary number of four data symbols 330 is depicted for the fifth exemplary data frame 318
  • an exemplary number of two data symbols 332 is depicted for the sixth exemplary data frame 320
  • a exemplary number of one data symbol 334 is
  • the data frame 300 can have any other number of data symbols 302 , 330, 332 , 334, for example any other power of two, a number of 3, 6, 7 or any other number .
  • Each data symbol 302 , 330 , 332 , 334 includes a user data portion 304 and a guard interval portion 306 including a guard word (G ) .
  • At least one of the following parameters is variable during the processing of the data frame 300 : a size L of the guard interval portion 306, a size N-L of the user data portion 30 , a size N of the data symbol 302 , a number of data symbols 302 the data frame 300 comprises, and a content of the guard interval portion 306.
  • the data frame 300 may be structured according to the examples described, above with respect to Figure 1.
  • variable-guard OFDM symbol format (VG-OFDM) and the symbol 302 is denoted as OFDM symbol .
  • the first to the third exemplary data frame formats 310, 312 , 314 are LTE-like formats with normal / long / short guard intervals 306 which can be changed at frame boundaries .
  • the term "frame" denotes here the shortest repetitive physical structure, in LTE notation, a frame may refer to a slot or a sub-frame.
  • the fourth exemplary data frame format 316 features GI .1 engths which are varying within a frame, e.g., providing for additional guard time at frame boundaries .
  • the novel frame structure as depicted in Fig. 2 thus includes the concept of frames where both guard intervals and OFDM symbols have variable length (L, N) .
  • variable GI content can likewise be useful for various purposes .
  • coding the GW sequence (Walsh- Hadamard, Zadoff-Chu, etc . ) in a frame can aid frame synchronization and signal separation, long GW enable initial channel estimation at the start of a frame, and null GW let die out transients at the end of a frame.
  • the novel frame structure as depicted in Fig. 2 thus includes the concept of guard words which are variable, including the special case that no GW is inserted (null GW, GI left empty) .
  • FIG. 3 a schematic block diagram of an OFDM transmission system 400, 410, e.g. a MIMO-OFDM system, is shown .
  • the transmitter (Tx) 400 forms OFDM symbols, each comprising N parallel sub- carriers in the frequency domain ( FD) , and transforms these into time domain (TD) by the N-IDFT ⁇ OFDM modulator) 403,
  • the receiver (Rx) 410 the TD-signal is transformed back into the frequency domain (FD) by the N-DFT (OFDM demodulator) 413.
  • ISI intersymbol interference
  • OFDM therefore features a guard interval (GI) inserted between consecutive OFDM symbols in order to let ISI transients die out before a new symbol begins .
  • this guard interval is filled with a cyclic prefix (CP) of length L taken from the end of the useful OFDM symbol following the GI .
  • CP cyclic prefix
  • OFDM symbols are formed, each comprising N parallel sub-carriers in the frequency domain (FD) .
  • the OFDM symbols are fed into a parallel/serial (P/S) converter 401 and thereafter they are transformed into the time domain (TD) by an inverse (discrete) Fourier
  • N-IDFT inverse (discrete) Fourier transformer 403
  • GI guard interval
  • GW guard word
  • a guard word is added to the time domain data signal as illustrated in Fig . 4a and finally the OFDM symbol 500 is transmitted by a transmission antenna 409.
  • the received OFDM symbol is subject to ISI ( inter-symbol interference) caused by dispersive channels .
  • ISI inter-symbol interference
  • the influences due to ISI are depicted in Fig . 4b by the falling slopes between the OFDM symbols and the guard words.
  • the OFDM symbol is received by a reception antenna 419 and thereafter, the OFDM symbol is fed into a serial/parallel (S/P) converter 411 which supplies the converted signal to a (discrete) Fourier transformer 413 ⁇ also called OFDM
  • a guard word extraction unit 417 the guard word is extracted from the OFDM symbol 510 and in a guard word canceling unit 415, the guard word is canceled from the OFDM symbol 510 as illustrated by the crossings depicted in Fig. 4b.
  • the output of the guard word canceling unit 415 is delivered to an equalization unit 421 and to a channel estimatio unit 423.
  • the channel estimation unit 423 supplies the results of the channel estimation to the equalization unit 421 which then provides OFDM symbols at an output thereo .
  • the OFDM symbols input into the P/S converter 411 or output by the equalization unit 421 can be [0042]
  • the processor is implemented as an integrated circuit on a chip.
  • the processor is implemented as an application specific integrated circuit .
  • the processor is implemented as a digital signal processo .
  • the processor is implemented as a processing unit running on a computer system.
  • the processor is implemented as an arbitrary hardware or software circuit .
  • a flow diagram of an exemplary method 600 for processing a data frame comprises processing 601 a data frame, the data frame having a predetermined frame size and comprising at least one data symbol configured to form a plurality of sub-carriers in the frequency domain, wherein each of the at least one data symbol comprises a user data portion and a guard interval portion, and wherein at least one of the following parameters is variable during the processing: a size L of the guard interval portion, a size (N-L) of the user data portion, a size of the at least, one data symbol, a number of data symbols the data frame comprises, and a content of the guard interval portion .
  • the at least one data symbo is encoded according to an orthogonal frequency division multiplexing technique .
  • the method 600 comprises clearing the guard interval portion .
  • the method 600 comprises inserting a guard word into the guard interval portion.
  • the guard word is predetermined .
  • the size of the at least one data symbol is variable with respect to a power of two of a basic data symbol size.
  • the method 600 comprises signaling the at least one variable parameter by using signaling information, in particular by using a data byte or a data word.
  • the method 600 comprises adapting the size L of the guard interval portion based on at least one of the following parameters; a channel delay spread, a modula ion and coding set, a IMO layer and antenna configuration, and a link direction .
  • the size N of the at least one data symbol and the number of data symbols the data frame comprises are predetermined and wherein at least one of the size and content of the guard interval portion of the at least one data symbol are selectable on a user specific basis .
  • the radio signals experience multi-path fading as depicted in Fig. 6.
  • the channel impulse responses "channel 1" for UE1, "channel 2" for UE2 and "channel 3" for UE3 are depicted in Fig . 6.
  • a novel frame format also called VG- OFDMA (variable-guard orthogonal frequency division multiple access ) , is presented in the following that can be
  • FIG. 7 an example of data frames 900, 901 forming a two-dimensional frame pattern in a time- frequency representa ion is shown.
  • Fig . 7 depicts an example of data frames 900, 901 forming a two-dimensional frame pattern in a time- frequency representa ion.
  • the data frame 900 includes a plurality of symbols 911, 912 aligned with symbol boundaries 930 in the time direction .
  • Each of the symbols 911, 912 includes a plurality of sub-symbols 914, 915, 916 aligned with sub-symbol boundaries 931 , 932 in the frequency
  • Each of the sub-symbols 91 , 915, 916 includes a user data portion 944 and a guard interval portion 946.
  • 901 at least one of the following parameters is variable during the processing : a size L of the guard interval portion 946, a size N-L of the user data portion 944 , a size N of the symbols, a numbe of symbols the data frame 900, 901 comprises, a content of the guard interval portion 946, a configuration of the sub-symbol boundaries 931 , 932 on a data frame basis and a configuration of the symbol boundaries 930 on a data frame basis,
  • the symbols 911, 912, 921 are encoded according to an orthogonal frequency division
  • the guard interval portion 946 includes a guard word.
  • the guard word is a predetermined guard word.
  • the size of the symbol 911 , 912 , 921 is variable with respect to a power of two of a basic data symbol size, for example of a byte or a word.
  • the size L of the guard interval portion 946 is based on at least one of the
  • a channel delay spread e.g., a channel delay spread
  • a modulation and coding set e.g., a modulation and coding set
  • a MI O layer and antenna configuration e.g., a link direction
  • a link direction e.g., upstream or downstream.
  • the data frame 900 includes are predetermined and at least one of the size L and content of the guard interval portion 106 of the symbol 102 are selectable on a user specific basis.
  • variable-guard orthogonal frequency-division multiple access format (VG-OFDMA) and the symbols 911, 912, 921 are denoted as OFDM symbols.
  • the sub-symbols 914, 915, 916 carry user-specific information 944, e.g.
  • the first sub- symbol 914 of the first symbol 911 carries information of a first user UEl
  • the second sub-symbol 915 of the first symbol 911 carries information of a second user UE2
  • the third sub-symbol 916 of the first symbol 911 carries information of a third user UE3.
  • sub- symbol boundaries 931, 932 are used for separating the sub- symbols from each other .
  • a first sub-symbol boundary 931 is used for separating the first sub-symbol 914 from the second sub-symbol 915 and a second sub-symbol boundary 932 is used for separating the second sub-symbol 915 from the third sub- symbol 916.
  • the same configuration is applied to the second symbol 912.
  • the first sub-symbol 924 of the first symbol 921 carries information of the third user UE3
  • the second sub-symbol 925 of the first symbol 921 carries empty information
  • the third sub-symbol 926 of the first symbol 921 carries information of the first user UEl.
  • a different configuration of the sub-symbol boundaries 932, 933 is used .
  • the second sub-symbol boundary 932 is used for separating the first sub-symbol 924 from the second sub-symbol 925 and a third sub-symbol boundary 933 is used for separating the second sub-symbol 925 from the third sub-symbol 926.
  • the sub-symbols 914, 915, 916 are defined over a plurality of sub-carriers forming the frequency axi s or direction of the 2-dircensional frame patter .
  • the sub-symbol boundaries 931 , 932 , 933 are configured with respect to these sub-carriers .
  • the sub-carriers are also illustrated in Fig. 9 described below.
  • the VG-OFDMA data frame 900 can be constructed f om a plurality of VG-OFDM data frames 100, 300 as described above with respect to Figs . 1 to 2 whe stacked in the frequency domain . I.e., the data frame 900 represents an extension of the VG-OFDM concept to multi-user environments.
  • the VG-OFDMA format also features a variable guard interval 946 within a framework of fixed- length OFDM symbols embedded in a fixed frame structure 900, 901. Each OFDM symbol 911 may incorporate a number of OFDM sub-symbols 914, 915, 916 separated in frequency and allocated to different users .
  • VG-OFDMA is characterized by user-specific guard interval lengths and guard words (user/link index ) . Defying common intuition, VG-OFDMA makes it possible that one and the same OFDM symbol incorporates OFDM sub-symbols with different guard intervals.
  • US User stations located at different positions may experience very different multi-path channel delay spreads which are often correlated with the distance to the base station (BS ) /eNB, as il lustrated in Fig. 6.
  • VB-OFD enables each U3/BS link to adapt its individual guard interval to the channel conditions actually present on that link, with the objective of optimizing user/link-specific throughput and/or transmission quality .
  • variable guard interval car be adapted to the channel and transmission conditions for each link with respect to channel delay spread and other parameters.
  • the GI L ⁇ , GW ⁇
  • the GI is adapted to each T ⁇ such that transmi ssion throughput and/or quality are optimized for each user/link individually .
  • the GI can further be tuned to other user- specific link parameters such as the MCS, MIMO layers/antennas, or link direction .
  • the frame format is independent of GI adaptation. The frame format can remain fixed and common to all users . It is thus simpler to define, standardize, and implement .
  • a suitably defined fixed frame format can accommodate OFDM symbols of user-specific lengths N j _ which further extends the range of user-specific GI lengths .
  • PRB physical resource block
  • RBG resource block groups
  • VG-OFDMA the adaptation of user-specific GI lengths is not confined to channel delay spreads but may also relate to other user-specific link parameters, in particular, modulation/coding (for instance, at low SNR more ISI is tolerable, so can be small or even zero) , MIMO layers (GI lengths can also be layer-specific) , MIMO antennas
  • VG-OFDMA opens very many possibilities to fine- tune individual OFDM/G I configurations to user-specific, link-specific and time-varying channel/transmission conditions .
  • VG-OFDM (A) (sub-) symbols are generated for transmission by clearing the VG-OFDM (A) guard intervals of unwanted signals and then inserting the GW (s ) .
  • Several methods can be used to solve the challenging first task of clearing the GI section.
  • One such exemplary method features the selection of f equency-domain ⁇ FD) sub-carrier symbols such that the GI section of the time-domain (TD) signal is essentially zero .
  • RS Reed-Solomon
  • Suitable RS codes may be systematic or non-systematic.
  • An example of VG-OFDMA sub-carrier allocation - implementing the VG-OFDMA symbol format shown in Figure 7 above - is illustrated in Figure 9.
  • the data frame 1100 forms a two-dimensional rame pattern in a time-frequency representation according to the description above with respect to Fig. 7.
  • the data frame 1100 includes a plurality of s mbols aligned with symbol
  • the symbol includes a plurality of sub-symbols 1110, 1120, 1130 aligned with sub-symbol boundaries in the frequency direction .
  • Each of the sub- symbols 1110, 1120 , 1130 comprises a user data portion and a guard interval portion according to the representation described above with respect to Fig . 7.
  • At least one of the following parameters is variable during the processing: a size of the guard interval portion, a size of the user data portion, a size of the symbols , a number of symbols the data frame 1100 comprises , a content of the guard interval
  • the guard word a configuration of the sub- symbol boundaries on a data frame basis, and a configu ation of the symbol boundaries on a data frame basis.
  • the sub-symbols 1110, 1120, 1130 carry user- specific information, in particular information of users UE1 , UE2, UE3 forming a multi-user system as described above with respect to Fig . 6.
  • the sub-symbol boundaries are configured with respect to sub-carriers defining the frequency direction of the two-dimensional frame pattern.
  • the sub-carriers are partitioned into a first set of sub-carriers at first frequency positions (k r ) and into a second set of sub-carriers at second frequency positions (k ⁇ ) in the two-dimensional frame pattern.
  • the first set of sub- [0067] Fig. 9 shows the redundant sub-carriers 1101 , 1105,
  • the particular OFDM format is characterized by a set k r of FD redundant sub-carrier indices defined such that the band-pass GI signal ⁇ here "band-pass" meaning limited in time-domain) with (two-sided) bandwidth equal to the GI length L can be sampled (here
  • a performance diagram 1200 of a method for processing a data frame is illustrated.
  • the performance diagram 1200 shows the potential of guard
  • VG-OFDM (A) 1203 described above is plotted against the GI length (decreasing from le t to right) relative to OFDM symbol length N.
  • the throughput of LTE with normal 1201 and extended/MBSFN CP length 1202 is also shown for comparison under otherwise same conditions (number of reference symbols , etc. ) .
  • VG-OFDM (A) allows the maximum throughput of LTE to increase by up to 6.6% (nCP) and 20% (eCP) .

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

L'invention concerne un procédé consistant à traiter une trame de données, la trame de données ayant une taille de trame prédéterminée et comprenant au moins un symbole de données configuré pour former une pluralité de sous-porteuses dans le domaine de fréquence. Chaque symbole parmi le ou les symboles de données comprend une partie de données utilisateur et une partie d'intervalle de garde; chaque symbole parmi le ou les symboles de données comprend une pluralité de sous-symboles; et au moins l'un des paramètres suivants est variable en cours de traitement : une taille de la partie d'intervalle de garde, une taille de la partie de données utilisateur, une taille du ou des symboles de données, un nombre de symboles de données que comprend la trame de données, un contenu de la partie d'intervalle de garde, et une configuration des limites de sous-symboles.
PCT/EP2014/060423 2013-05-28 2014-05-21 Procédés et dispositifs de traitement d'une trame de données WO2014191273A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201480022617.1A CN105122755B (zh) 2013-05-28 2014-05-21 用于处理具有可变保护间隔的数据帧的方法和设备
EP14725991.5A EP3005637B1 (fr) 2013-05-28 2014-05-21 Procédés et dispositifs pour traiter une trame de données ayant intervalle de garde variable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/903,541 US10057389B2 (en) 2013-05-28 2013-05-28 Methods and devices for processing a data frame
US13/903,541 2013-05-28

Publications (2)

Publication Number Publication Date
WO2014191273A2 true WO2014191273A2 (fr) 2014-12-04
WO2014191273A3 WO2014191273A3 (fr) 2015-01-22

Family

ID=50780477

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/060423 WO2014191273A2 (fr) 2013-05-28 2014-05-21 Procédés et dispositifs de traitement d'une trame de données

Country Status (4)

Country Link
US (1) US10057389B2 (fr)
EP (1) EP3005637B1 (fr)
CN (1) CN105122755B (fr)
WO (1) WO2014191273A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017112694A1 (fr) * 2015-12-22 2017-06-29 Idac Holdings, Inc. Adaptation de la durée d'un préfixe cyclique par rapport à l'étalement du retard pendant le maintien de la durée d'un symbole
CN111818645A (zh) * 2019-07-24 2020-10-23 维沃移动通信有限公司 一种信息传输方法、网络设备及终端

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3044923A2 (fr) 2013-09-10 2016-07-20 Marvell World Trade Ltd. Intervalle de garde étendu pour wlan extérieur
US10200137B2 (en) * 2013-12-27 2019-02-05 Huawei Technologies Co., Ltd. System and method for adaptive TTI coexistence with LTE
CN106464635B (zh) 2014-04-21 2020-01-21 Lg电子株式会社 广播信号发送设备、广播信号接收设备、广播信号发送方法以及广播信号接收方法
US11855818B1 (en) * 2014-04-30 2023-12-26 Marvell Asia Pte Ltd Adaptive orthogonal frequency division multiplexing (OFDM) numerology in a wireless communication network
US9584351B2 (en) 2014-12-17 2017-02-28 Intel Corporation Symbol constellation design
US9313063B1 (en) * 2015-01-30 2016-04-12 Huawei Technologies Co., Ltd. Apparatus and method for transmitting data with conditional zero padding
WO2016209133A1 (fr) * 2015-06-26 2016-12-29 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et dispositif de communication sans fil
WO2017052424A1 (fr) * 2015-09-21 2017-03-30 Telefonaktiebolaget Lm Ericsson (Publ) Adaptation de l'intervalle de garde pour communication sans fil
US10560301B2 (en) * 2015-10-16 2020-02-11 Intel IP Corporation Apparatuses for DMRS design or processing for guard interval or zero tail DFT spread OFDM systems
EP3371926B1 (fr) 2015-11-04 2023-01-04 IDAC Holdings, Inc. Transmission ofdm-s-dft zt à longueurs multiples
WO2017085971A1 (fr) * 2015-11-19 2017-05-26 ソニー株式会社 Dispositif, procédé et programme
CN106899527B (zh) * 2015-12-17 2020-10-27 华为技术有限公司 一种数据符号传输方法及无线网络设备
CN109155996A (zh) * 2016-05-17 2019-01-04 华为技术有限公司 子帧配置方法及装置
CN107733593B (zh) * 2016-08-10 2021-01-29 华为技术有限公司 传输信息的方法和装置
WO2018077395A1 (fr) * 2016-10-26 2018-05-03 Huawei Technologies Co., Ltd. Dispositif de commande, nœud de réseau et procédés associés
CN108366028B (zh) * 2017-01-26 2021-01-29 华为技术有限公司 一种循环前缀cp确定方法及无线网络设备
WO2018201338A1 (fr) * 2017-05-03 2018-11-08 华为技术有限公司 Procédé et dispositif de communication
US10404509B2 (en) * 2017-05-11 2019-09-03 Qualcomm Incorporated Slot structure design using guard intervals in a single carrier waveform
US10171151B1 (en) 2017-06-30 2019-01-01 Qualcomm Incorporated Throughput optimization by guard interval selection from beamforming feedback
IT201700082050A1 (it) * 2017-07-19 2019-01-19 Inst Rundfunktechnik Gmbh Sender, verfahren, vorrichtung, empfänger und computerprodukt zum drahtlosen senden von zusatzinformationssignalen
US10757700B2 (en) 2018-10-07 2020-08-25 At&T Intellectual Property I, L.P. Frame structure coordination in wireless communication systems with integrated access and backhaul links in advanced networks
CN113242086B (zh) * 2019-01-23 2022-12-09 长沙天仪空间科技研究院有限公司 一种通信卫星
US10911279B2 (en) * 2019-03-05 2021-02-02 Cisco Technology, Inc. Dynamically configuring 802.11ax extended range settings based on network measurements
CN110445579B (zh) * 2019-07-31 2022-03-15 广州小鹏汽车科技有限公司 数据处理方法、数据处理装置、车载终端、车辆和介质
CN112399585B (zh) * 2019-08-16 2023-08-04 华为技术有限公司 一种资源复用方法及装置
CN115315930B (zh) * 2020-05-15 2023-10-13 Oppo广东移动通信有限公司 保护间隔的确定方法、设备及存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1531593A2 (fr) * 2003-11-11 2005-05-18 NTT DoCoMo, Inc. Emetteur et récepteur pour MDFO
EP1881628A1 (fr) * 2005-04-28 2008-01-23 NTT DoCoMo Inc. Appareil de creation de groupes de parametres radio, transmetteur et recepteur
EP2337293A1 (fr) * 2009-12-15 2011-06-22 Lakeside Labs GmbH Dispositifs, procédés et signaux de codage OFDM

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100576010B1 (ko) * 2002-10-08 2006-05-02 삼성전자주식회사 직교주파수분할다중 통신시스템의 보호구간 삽입/제거장치 및 방법
JP3871270B2 (ja) 2003-05-20 2007-01-24 株式会社インテリジェント・コスモス研究機構 送信装置および通信システム
EP1727324A1 (fr) * 2005-05-25 2006-11-29 Siemens Aktiengesellschaft Transmission radio avec intervalle de garde de longueur variable
US8379776B2 (en) * 2006-06-26 2013-02-19 Kyocera Corporation OFDM communication device and guard interval length decision method
US8369301B2 (en) * 2007-10-17 2013-02-05 Zte (Usa) Inc. OFDM/OFDMA frame structure for communication systems
US8719684B2 (en) * 2010-08-31 2014-05-06 Qualcomm Incorporated Guard interval signaling for data symbol number determination
US9042463B2 (en) * 2011-01-18 2015-05-26 Maxlinear, Inc. Method and system for adaptive guard interval (GI) combining
KR102249435B1 (ko) * 2011-05-18 2021-05-10 마벨 월드 트레이드 리미티드 그린필드 프리앰블을 구비한 짧은 보호 구간
CN102857284B (zh) 2011-06-28 2015-12-09 上海华为技术有限公司 数据发射方法、接收方法、装置及系统
US20130034054A1 (en) * 2011-08-04 2013-02-07 Huan Wu Method and system for formatting cyclic prefix/postfix in a mobile communication system
US20130185617A1 (en) * 2012-01-12 2013-07-18 Texas Instruments Incorporated Wireless backhaul communication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1531593A2 (fr) * 2003-11-11 2005-05-18 NTT DoCoMo, Inc. Emetteur et récepteur pour MDFO
EP1881628A1 (fr) * 2005-04-28 2008-01-23 NTT DoCoMo Inc. Appareil de creation de groupes de parametres radio, transmetteur et recepteur
EP2337293A1 (fr) * 2009-12-15 2011-06-22 Lakeside Labs GmbH Dispositifs, procédés et signaux de codage OFDM

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MARIO HUEMER ET AL: "Non-Systematic Complex Number RS Coded OFDM by Unique Word Prefix", IEEE TRANSACTIONS ON SIGNAL PROCESSING, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 60, no. 1, 1 January 2012 (2012-01-01), pages 285-299, XP011389741, ISSN: 1053-587X, DOI: 10.1109/TSP.2011.2168522 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017112694A1 (fr) * 2015-12-22 2017-06-29 Idac Holdings, Inc. Adaptation de la durée d'un préfixe cyclique par rapport à l'étalement du retard pendant le maintien de la durée d'un symbole
CN111818645A (zh) * 2019-07-24 2020-10-23 维沃移动通信有限公司 一种信息传输方法、网络设备及终端
WO2021013008A1 (fr) * 2019-07-24 2021-01-28 维沃移动通信有限公司 Procédé de transmission d'informations, dispositif de réseau et terminal
CN111818645B (zh) * 2019-07-24 2023-09-22 维沃移动通信有限公司 一种信息传输方法、网络设备及终端

Also Published As

Publication number Publication date
WO2014191273A3 (fr) 2015-01-22
US10057389B2 (en) 2018-08-21
US20140355626A1 (en) 2014-12-04
CN105122755A (zh) 2015-12-02
EP3005637B1 (fr) 2019-07-24
EP3005637A2 (fr) 2016-04-13
CN105122755B (zh) 2019-04-09

Similar Documents

Publication Publication Date Title
EP3005637B1 (fr) Procédés et dispositifs pour traiter une trame de données ayant intervalle de garde variable
US11032119B2 (en) Method and system for combining DFT-transformed OFDM and non-transformed OFDM
JP5216105B2 (ja) Ｏｆｄｍ（ａ）システムにおけるアップリンク伝送方法
EP2590375B1 (fr) Méthode de compression et de décompression d'un signal montant en bande de base ainsi qu' appareil et système correspondants
EP1872480B1 (fr) Systeme et procede hybrides d'acces multiple par repartition orthogonale de frequences
CA2773790C (fr) Signalisation et estimation de canal pour une diversite de transmission de liaison montante
US20140064243A1 (en) Method and Systems for OFDM Using Code Division Multiplexing
CN105306118B (zh) 广带异步可调多载波无线传输方法及系统
CN101208887B (zh) 正交频分多路复用符号的传输方法和系统
US20100111065A1 (en) Method for transmitting downlink reference signals in a multi-antenna wireless communication system
EP2449740B1 (fr) Circuit intégré avec module d'estimation de canal et procédé lié
CN102143119A (zh) 正交频分多路复用符号的传输方法和系统
US20110103341A1 (en) Apparatus and Method for Data Transmission Using Transmit Diversity in SC-FDMA
KR101293360B1 (ko) Ｏｆｄｍａ 이동통신 시스템의 협력 전송 방법 및 단말
CN103152087A (zh) 发射分集方案
WO2007111198A1 (fr) Procede et dispositif de transmission
KR101375732B1 (ko) 중계 방식의 무선통신 시스템에서 주파수 동기 오차 제거장치 및 방법
KR20100058390A (ko) 다중안테나 시스템에서 참조신호 전송방법
US20150288429A1 (en) Method and apparatus of data transmission for cooperation communication

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201480022617.1

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14725991

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 2014725991

Country of ref document: EP